485609 ÷ 12 
The aim is to understand the frequency of 12 in 485609.

On to step 1:
12 can be fit into 4 0 times, resulting in a remainder of 4.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 4 to get 4.
Grab the next digit (8) from the dividend, add it to 4, then carry on: 48 / 12

Moving on to step 2:
If we divide 48 by 12, we get 4 and a remainder of 0.
Record the quotient 4 as the next digit in the result. 
Result so far: 4.0
Deduct 48 from 48 and we're left with 0.
Take the next digit (5) from the dividend and append it to 0, then repeat: 5 / 12

Going ahead to step 3:
If we divide 5 by 12, we get 0 and a remainder of 5.
Use 0 as the next digit of our solution. 
Result so far: 40.0
The remainder is 5 after subtracting 0 from 5.
Grab the next digit (6) from the dividend, add it to 5, then carry on: 56 / 12

Step 4:
12 goes into 56 4 times with a remainder of 8.
Write down 4 as next digit of the result. 
Result so far: 404.0
Subtract 48 from 56 to get 8.
Bring next digit (0) of the dividend behind the 8 and repeat the process: 80 / 12

Advancing to step 5:
12 can be fit into 80 6 times, resulting in a remainder of 8.
Record the quotient 6 as the next digit in the result. 
Result so far: 4046.0
Subtracting 72 from 80 leaves us with 8.
Bring next digit (9) of the dividend behind the 8 and repeat the process: 89 / 12

Advancing to step 6:
89 divided by 12 is 7 with a remainder of 5.
The number 7 becomes the next digit in our result. 
Result so far: 40467.0
If we subtract 84 from 89, we get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Moving on to step 7:
12 goes into 50 4 times with a remainder of 2.
The number 4 becomes the next digit in our result. 
Result so far: 40467.4
The remainder is 2 after subtracting 48 from 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

On to step 8:
12 goes into 20 1 times with a remainder of 8.
The next digit of our result is 1. 
Result so far: 40467.41
Deduct 12 from 20 and we're left with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Moving on to step 9:
When dividing 80 by 12, we get 6 with a remainder of 8.
The next digit of our result is 6. 
Result so far: 40467.416
The remainder is 8 after subtracting 72 from 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

On to step 10:
When dividing 80 by 12, we get 6 with a remainder of 8.
Record the quotient 6 as the next digit in the result. 
Result so far: 40467.4166
Subtract 72 from 80 to get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

After the division, we end up with 40467.4166 and a remainder of 8e-05.